FastViewer Variant Merged with FastSpy and disguised as a Legitimate Mobile Application

Author: Youngjae Shin, Sebin Lee | BLKSMTH

Last Modified : Oct 30, 2023

Executive Summary

• The S2W Threat Analysis team recently hunted and analyzed a new FastViewer sample from the Kimsuky APT group behind North Korea, and found that the group seems to be using a variant of FastViewer.

— Past FastViewer and FastSpy analysis reports: (2022–10–24) Unveil the evolution of Kimsuky targeting Android devices with newly discovered mobile malware

• The variant has …

analysis application apt author found kimsuky korea lee malware analysis mobile mobile application north north korea photo s2w sample team threat threat analysis